Finding the Third Proportional to 555,870 and 1,212,108

Step by Step Solution

1. Step 1: Write the proportion equation
   555,870 : 1,212,108 = 1,212,108 : x
2. Step 2: Convert to fraction form
   555,870/1,212,108 = 1,212,108/x
3. Step 3: Cross multiply
   555,870x = 1,212,108 × 1,212,108
4. Step 4: Simplify right side
   555,870x = 1,469,205,803,664
5. Step 5: Solve for x
   x = 1,469,205,803,664/555,870
6. Step 6: Final answer
   x = 2,643,074.47